If you were to design a system to handle customer service requests arriving through various channels, with each request needing to be addressed in the order it was received, which data structure would be most appropriate?
Queue
Binary Search Tree
Graph
Heap
Consider an array-based queue with 'front' at index 3 and 'rear' at index 7. After two dequeue operations, what will be the new value of 'front'?
5
2
1
6
What is the purpose of the 'front' pointer in an array implementation of a queue?
It points to the most recently added element.
It points to the next available empty location.
It points to the element that has been in the queue the longest.
It tracks the total number of elements in the queue.
Which of the following real-world scenarios can be effectively modeled using a queue?
Handling customer service requests in a first-come, first-served manner.
Managing a priority-based task list.
Implementing an undo/redo functionality in a text editor.
Storing the browsing history in a web browser.
In a queue data structure, what does the 'enqueue' operation perform?
Adds an element to the rear of the queue.
Adds an element to the front of the queue.
Checks if the queue is empty.
Removes and returns the element at the front of the queue.
What is the primary disadvantage of using an array to implement a queue?
Complex implementation
High memory usage
Fixed size limitation
Inefficient search operations
What is a potential drawback of implementing a queue using an array with a fixed size?
Risk of queue overflow if the queue reaches its maximum capacity.
Requirement of complex algorithms for insertion and deletion.
Increased time complexity for enqueue and dequeue operations.
Inability to store elements of different data types.
Imagine a print queue in a busy office environment. Which data structure, implemented using an array, would be most suitable for managing this print queue effectively?
Hash Table
Circular Queue
Stack
Binary Tree
In an array-based queue implementation, what happens when you dequeue from an empty queue?
The last element is removed.
The first element is removed.
The queue remains unchanged.
An underflow condition occurs.
What value does the 'isEmpty' operation on a queue return if the queue contains no elements?
-1
True
The first element in the queue
0